Pith Number

pith:ZKCHMHW3

pith:2022:ZKCHMHW3PN3TGTVLQGR5QKC5VJ

not attested not anchored not stored refs pending

The Central 1000 au of a Pre-stellar Core Revealed with ALMA. II. Almost Complete Freeze-out

Ana Chac\'on-Tanarro, Anika Schmiedeke, Bo Zhao, Charlotte Vastel, Daniele Galli, Elena Redaelli, Eric Keto, Felipe Alves, Izaskun Jim\'enez-Serra, Jaime E. Pineda, Jorma Harju, Luca Bizzocchi, Marco Padovani, Maria Jos\'e Maureira, Mario Tafalla, Olli Sipil\"a, Paola Caselli, Rachel Friesen, Silvia Spezzano, Tyler L. Bourke, Zhi-Yun Li

arxiv:2202.13374 v1 · 2022-02-27 · astro-ph.SR · astro-ph.EP · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKCHMHW3PN3TGTVLQGR5QKC5VJ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T04:16:01.526644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca84761edb7b77334eab81a3d8285daa579aaf52d9dd52533eced9622e9a90e3

Aliases

arxiv: 2202.13374 · arxiv_version: 2202.13374v1 · doi: 10.48550/arxiv.2202.13374 · pith_short_12: ZKCHMHW3PN3T · pith_short_16: ZKCHMHW3PN3TGTVL · pith_short_8: ZKCHMHW3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZKCHMHW3PN3TGTVLQGR5QKC5VJ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ca84761edb7b77334eab81a3d8285daa579aaf52d9dd52533eced9622e9a90e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa1e6d28a709d3a319605571cada6c8a0ba67d9bea8b13c311831286eb62fcb9",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-02-27T14:37:24Z",
    "title_canon_sha256": "b823ae440befc3aa76e78dd23c3b0ad50255f7739ae9510061825eebc7556a9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13374",
    "kind": "arxiv",
    "version": 1
  }
}